1 files changed, 118 insertions, 0 deletions
diff --git a/meta-ibs/meta-cp2-5422/recipes-x86/chassis/x86-power-control/0001-x86-power-control-added-check-BMC-restart-cause-for-.patch b/meta-ibs/meta-cp2-5422/recipes-x86/chassis/x86-power-control/0001-x86-power-control-added-check-BMC-restart-cause-for-.patch
new file mode 100644
index 0000000000..92a0da1675
--- /dev/null
+++ b/meta-ibs/meta-cp2-5422/recipes-x86/chassis/x86-power-control/0001-x86-power-control-added-check-BMC-restart-cause-for-.patch
@@ -0,0 +1,118 @@
+From f49794106c6993b0a53b3b6634b44ae3d2f5cd82 Mon Sep 17 00:00:00 2001
+From: Nikita Kosenkov <NKosenkov@IBS.RU>
+Date: Thu, 9 Jun 2022 14:26:30 +0300
+Subject: [PATCH] x86-power-control: added check BMC restart cause for AlwaysOn
+ policy
+
+---
+ src/power_control.cpp | 80 +++++++++++++++++++++++++++++++++++++++++--
+ 1 file changed, 78 insertions(+), 2 deletions(-)
+
+diff --git a/src/power_control.cpp b/src/power_control.cpp
+index 05aa45c..380ba7e 100644
+--- a/src/power_control.cpp
++++ b/src/power_control.cpp
+@@ -31,6 +31,7 @@
+ #include <filesystem>
+ #include <fstream>
+ #include <string_view>
++#include <regex>
+ 
+ namespace power_control
+ {
+@@ -857,6 +858,74 @@ void PersistentState::saveState()
+     appStateStream << stateData.dump(indentationSize);
+ }
+ 
++enum class BMCRestartCause 
++{
++    power = 1,  // After cold BMC boot
++    watchdog,   // After warm BMC reboot
++    unknown     // Unknown reboot cause
++};
++
++BMCRestartCause getBmcRestartCause()
++{    
++    // U-boot write restart cause to bootargs
++    std::string cmdlineFilePath{"/proc/cmdline"};
++    std::ifstream cmdlineFile{cmdlineFilePath};
++    if(!cmdlineFile.is_open())
++    {
++        lg2::error("BMCRestartCause: cannot open {FILE}", "FILE",
++            cmdlineFilePath);
++
++        return BMCRestartCause::unknown;
++    }
++        
++    // Read cmd line from file
++    std::stringstream cmdlineBuffer;
++    cmdlineBuffer << cmdlineFile.rdbuf();
++    cmdlineFile.close();
++
++    std::string cmdline{cmdlineBuffer.str()};
++    if(cmdline.size() == 0)
++    {
++        lg2::error("BMCRestartCause: file {FILE} is empty", "FILE",
++            cmdlineFilePath);
++
++        return BMCRestartCause::unknown; 
++    }
++
++    // Parse cmdline with regex
++    std::smatch regexResult;
++    std::regex regexExpr("resetreason=((?:power|watchdog))");
++    if (!std::regex_search(cmdline, regexResult, regexExpr)) 
++    {
++        lg2::error("BMCRestartCause: error parse file {FILE}", "FILE",
++            cmdlineFilePath);
++
++        return BMCRestartCause::unknown; 
++    }
++
++    // Initialize restart cause 
++    BMCRestartCause bmcRestartCause = BMCRestartCause::unknown;
++
++    if(regexResult.ready())
++    {
++        // The second element is needed
++        // as it contains the result of the second capturing group
++        if(regexResult.str(1) == "power")
++        {
++            bmcRestartCause = BMCRestartCause::power;
++        }
++        else if (regexResult.str(1) == "watchdog")
++        {
++            bmcRestartCause = BMCRestartCause::watchdog;
++        }
++
++        lg2::info("BmcRestartCause: current BMC restart cause={CAUSE}", "CAUSE",
++            regexResult.str(1));
++    }
++
++    return bmcRestartCause;
++}
++
+ static constexpr char const* setingsService = "xyz.openbmc_project.Settings";
+ static constexpr char const* powerRestorePolicyObject =
+     "/xyz/openbmc_project/control/host0/power_restore_policy";
+@@ -1083,8 +1152,15 @@ void PowerRestoreController::invoke()
+     if (powerRestorePolicy ==
+         "xyz.openbmc_project.Control.Power.RestorePolicy.Policy.AlwaysOn")
+     {
+-        sendPowerControlEvent(Event::powerOnRequest);
+-        setRestartCauseProperty(getRestartCause(RestartCause::powerPolicyOn));
++	// We check the reason for the BMC restart and
++        // if the BMC is after a cold boot,
++        // then start the "AlwaysOn" policy
++        if (getBmcRestartCause() == BMCRestartCause::power)
++        {
++            sendPowerControlEvent(Event::powerOnRequest);
++            setRestartCauseProperty(
++                    getRestartCause(RestartCause::powerPolicyOn));
++        }
+     }
+     else if (powerRestorePolicy ==
+              "xyz.openbmc_project.Control.Power.RestorePolicy.Policy.Restore")
+-- 
+2.35.1
+